Adding antiAffinity field to DSL

* global and local antiaffinity support added
* dsl doc updated
* dsl version bumped to 0.2.0

Change-Id: I832b00e75bc546f7de1446d660f178c58dc3b1b4

doc/source/dsl.rst

@@ -16,6 +16,7 @@ Application definition template
             - internal-port:external-port
         hostNetwork: true
         hostPID: true
+        antiAffinity: local
         containers:
             - name: container-name
               image: container-image
@@ -102,6 +103,10 @@ service
 |               | old Pods by new ones                          |          | ["RollingUpdate",|               |
 |               |                                               |          | "Recreate"]      |               |
 +---------------+-----------------------------------------------+----------+------------------+---------------+
+| antiAffinity  | Restrict scheduling of pods on the same host: | false    | one of:          | null          |
+|               | local - within namespace                      |          | [null, "global", |               |
+|               | global - within k8s cluster                   |          | "local"]         |               |
++---------------+-----------------------------------------------+----------+------------------+---------------+
 
 .. _container:
 

fuel_ccp/__init__.py

@@ -17,4 +17,4 @@ import pbr.version
 
 version_info = pbr.version.VersionInfo("fuel_ccp")
 __version__ = version_info.version_string()
-dsl_version = "0.1.0"
+dsl_version = "0.2.0"

fuel_ccp/templates.py

@@ -345,7 +345,7 @@ def serialize_affinity(service, topology):
             }
         }
     }
-    if service.get("hostNetwork"):
+    if service.get("hostNetwork") or service.get("antiAffinity") == 'global':
         policy["podAntiAffinity"] = {
             "requiredDuringSchedulingIgnoredDuringExecution": [{
                 "labelSelector": {
@@ -357,7 +357,8 @@ def serialize_affinity(service, topology):
                 "namespaces": []
             }]
         }
-    elif service.get("kind") == "DaemonSet":
+    elif service.get("kind") == "DaemonSet" or service.get(
+            "antiAffinity") == 'local':
         policy["podAntiAffinity"] = {
             "requiredDuringSchedulingIgnoredDuringExecution": [{
                 "labelSelector": {

fuel_ccp/validation/service.py

@@ -210,6 +210,9 @@ SERVICE_SCHEMA = {
                 "strategy": {
                     "enum": ["RollingUpdate", "Recreate"]
                 },
+                "antiAffinity": {
+                    "enum": [None, "local", "global"]
+                },
                 "containers": {
                     "type": "array",
                     "minItems": 1,
@@ -260,7 +263,7 @@ SERVICE_SCHEMA = {
                                         "valueFrom": {"type": "object"}
                                     }
                                 }
-                            }
+                            },
                         }
                     }
                 }